an 'illegal alien/immigrant' [=a foreign person who is living in a country without having official permission to live there]
The campaign was accused of many fund-raising 'illegalities'. [=illegal activities]
In this state, it is 'illegal' for anyone under the age of 21 to drink alcohol.
(..) But, he's not. It's the illusion of free will. Crap. You circumvented the law by creating a machine that thinks it's a man. - But that's illegal. - No, no. It is a machine that think it's Alex Murphy. And in my book - That's legal. Well done. (..)2014 RoboCop